Check support for enterprise Proxies

[hoh]

We want to support Proxies for corporation networks.

Documentation on aiohttp:
https://docs.aiohttp.org/en/stable/client_advanced.html?highlight=proxy#proxy-support

Relevant part:

Contrary to the requests library, it won’t read environment variables by default. But you can do so by passing trust_env=True into aiohttp.ClientSession constructor for extracting proxy configuration from HTTP_PROXY, HTTPS_PROXY, WS_PROXY or WSS_PROXY environment variables (all are case insensitive):

async with aiohttp.ClientSession(trust_env=True) as session:
    async with session.get("http://python.org") as resp:
        print(resp.status)